/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:11:36,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:11:36,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:11:36,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:11:36,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:11:36,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:11:36,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:11:36,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:11:36,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:11:36,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:11:36,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:11:36,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:11:36,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:11:36,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:11:36,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:11:36,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:11:36,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:11:36,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:11:36,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:11:36,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:11:36,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:11:36,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:11:36,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:11:36,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:11:36,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:11:36,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:11:36,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:11:36,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:11:36,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:11:36,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:11:36,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:11:36,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:11:36,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:11:36,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:11:36,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:11:36,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:11:36,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:11:36,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:11:36,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:11:36,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:11:36,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:11:36,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 12:11:36,672 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:11:36,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:11:36,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:11:36,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:11:36,674 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:11:36,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:11:36,674 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:11:36,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:11:36,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:11:36,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:11:36,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:11:36,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:11:36,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:11:36,678 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:11:36,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:11:36,678 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:11:36,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:11:36,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:11:36,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:11:36,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:11:36,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:11:36,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:11:36,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:11:36,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:11:36,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:11:36,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:11:36,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:11:36,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:11:36,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:11:36,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 12:11:37,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:11:37,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:11:37,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:11:37,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:11:37,057 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:11:37,057 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label35.c [2020-10-12 12:11:37,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/857d67e81/359e7c907e9b4da6b87bbc763f731684/FLAG88321341e [2020-10-12 12:11:38,000 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:11:38,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label35.c [2020-10-12 12:11:38,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/857d67e81/359e7c907e9b4da6b87bbc763f731684/FLAG88321341e [2020-10-12 12:11:38,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/857d67e81/359e7c907e9b4da6b87bbc763f731684 [2020-10-12 12:11:38,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:11:38,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:11:38,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:11:38,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:11:38,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:11:38,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:11:38" (1/1) ... [2020-10-12 12:11:38,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bedca4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:38, skipping insertion in model container [2020-10-12 12:11:38,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:11:38" (1/1) ... [2020-10-12 12:11:38,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:11:38,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:11:41,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:11:41,135 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:11:42,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:11:42,251 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:11:42,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:42 WrapperNode [2020-10-12 12:11:42,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:11:42,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:11:42,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:11:42,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:11:42,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:42" (1/1) ... [2020-10-12 12:11:42,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:42" (1/1) ... [2020-10-12 12:11:42,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:42" (1/1) ... [2020-10-12 12:11:42,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:42" (1/1) ... [2020-10-12 12:11:42,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:42" (1/1) ... [2020-10-12 12:11:42,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:42" (1/1) ... [2020-10-12 12:11:42,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:42" (1/1) ... [2020-10-12 12:11:42,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:11:42,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:11:42,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:11:42,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:11:42,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:11:42,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:11:42,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:11:42,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:11:42,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:11:42,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:11:42,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:11:42,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:11:42,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:11:42,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:11:42,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:11:42,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:11:42,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:11:42,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:11:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:11:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:11:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:11:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:11:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:11:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:11:49,943 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:11:49,943 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:11:49,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:11:49 BoogieIcfgContainer [2020-10-12 12:11:49,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:11:49,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:11:49,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:11:49,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:11:49,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:11:38" (1/3) ... [2020-10-12 12:11:49,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc8defc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:11:49, skipping insertion in model container [2020-10-12 12:11:49,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:42" (2/3) ... [2020-10-12 12:11:49,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc8defc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:11:49, skipping insertion in model container [2020-10-12 12:11:49,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:11:49" (3/3) ... [2020-10-12 12:11:49,970 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label35.c [2020-10-12 12:11:49,981 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:11:49,991 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:11:50,007 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:11:50,046 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:11:50,046 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:11:50,046 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:11:50,046 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:11:50,046 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:11:50,047 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:11:50,047 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:11:50,048 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:11:50,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:11:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2020-10-12 12:11:50,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:11:50,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:11:50,176 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:11:50,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:11:50,183 INFO L82 PathProgramCache]: Analyzing trace with hash 748659775, now seen corresponding path program 1 times [2020-10-12 12:11:50,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:11:50,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038810558] [2020-10-12 12:11:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:11:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:51,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:53,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:56,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:56,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-12 12:11:56,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:11:56,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-12 12:11:56,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:11:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:11:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:11:56,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 12:11:59,827 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-12 12:12:00,052 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-12 12:12:00,284 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-12 12:12:00,492 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-12 12:12:00,715 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-12 12:12:00,969 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-12 12:12:01,173 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-12 12:12:01,350 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-12 12:12:01,542 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-12 12:12:01,729 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-12 12:12:02,269 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:12:02,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:12:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:02,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:12:02,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:12:02,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:12:02,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 12:12:02,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:12:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:12:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:12:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:12:02,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:12:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:12:12,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038810558] [2020-10-12 12:12:12,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:12:12,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 12:12:12,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136197837] [2020-10-12 12:12:12,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:12:12,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:12:12,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:12:12,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:12:12,929 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-12 12:12:13,316 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 12:12:14,028 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-12 12:12:14,738 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-12 12:12:15,517 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 174 [2020-10-12 12:12:19,329 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 173 [2020-10-12 12:12:22,637 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 208 DAG size of output: 172 [2020-10-12 12:12:25,008 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 163 [2020-10-12 12:12:25,741 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 169 [2020-10-12 12:12:26,735 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 168 [2020-10-12 12:12:35,868 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 161 [2020-10-12 12:12:36,592 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 166 [2020-10-12 12:12:39,466 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 165 [2020-10-12 12:12:46,586 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 159 [2020-10-12 12:12:47,334 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 163 [2020-10-12 12:12:49,758 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-12 12:13:02,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:02,072 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:13:02,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:13:02,075 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 978 [2020-10-12 12:13:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:02,136 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:13:02,137 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:13:02,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:13:02,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:13:02,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:13:02,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:13:02,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:13:02,314 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 978 [2020-10-12 12:13:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:02,321 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:13:02,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:13:02,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:13:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2020-10-12 12:13:02,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:02,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:13:02,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:13:02,381 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:02,382 INFO L82 PathProgramCache]: Analyzing trace with hash -2020060846, now seen corresponding path program 1 times [2020-10-12 12:13:02,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:02,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204451682] [2020-10-12 12:13:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:03,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:03,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:07,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:07,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1066 [2020-10-12 12:13:07,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:13:07,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-12 12:13:07,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:13:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:13:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 985 [2020-10-12 12:13:07,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:09,051 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:09,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:09,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:09,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:09,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:09,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:09,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 12:13:09,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:09,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:13:09,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:13:09,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:13:09,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:09,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:09,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:09,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:13:09,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:09,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-12 12:13:09,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:13:09,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:13:10,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204451682] [2020-10-12 12:13:10,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:10,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:13:10,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073799807] [2020-10-12 12:13:10,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:13:10,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:10,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:13:10,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:13:10,230 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 5 states. [2020-10-12 12:13:10,650 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:13:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:25,219 INFO L93 Difference]: Finished difference Result 4397 states and 7435 transitions. [2020-10-12 12:13:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:13:25,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1048 [2020-10-12 12:13:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:25,239 INFO L225 Difference]: With dead ends: 4397 [2020-10-12 12:13:25,239 INFO L226 Difference]: Without dead ends: 3138 [2020-10-12 12:13:25,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:13:25,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-10-12 12:13:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 3087. [2020-10-12 12:13:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3087 states. [2020-10-12 12:13:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4566 transitions. [2020-10-12 12:13:25,324 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4566 transitions. Word has length 1048 [2020-10-12 12:13:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:25,326 INFO L479 AbstractCegarLoop]: Abstraction has 3087 states and 4566 transitions. [2020-10-12 12:13:25,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:13:25,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4566 transitions. [2020-10-12 12:13:25,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2020-10-12 12:13:25,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:25,352 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:13:25,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:13:25,352 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:25,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:25,353 INFO L82 PathProgramCache]: Analyzing trace with hash 624200517, now seen corresponding path program 1 times [2020-10-12 12:13:25,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:25,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613281956] [2020-10-12 12:13:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:25,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:30,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:30,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1077 [2020-10-12 12:13:30,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:13:30,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-12 12:13:30,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:30,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:13:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:13:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:13:30,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:31,050 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:31,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:31,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:31,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:31,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:31,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:31,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 12:13:31,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:13:31,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:31,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:31,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:31,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:31,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:13:31,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:31,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-12 12:13:31,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:13:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:13:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:13:31,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:31,812 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-12 12:13:31,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:13:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:31,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:31,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:31,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:13:31,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:31,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 12:13:31,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:13:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 12:13:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:13:31,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 12:13:33,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613281956] [2020-10-12 12:13:33,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:33,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:13:33,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685718976] [2020-10-12 12:13:33,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:13:33,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:33,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:13:33,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:13:33,567 INFO L87 Difference]: Start difference. First operand 3087 states and 4566 transitions. Second operand 8 states. [2020-10-12 12:13:33,749 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:13:35,160 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-12 12:13:37,514 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 12:14:05,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:14:05,478 INFO L93 Difference]: Finished difference Result 9902 states and 15919 transitions. [2020-10-12 12:14:05,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 12:14:05,479 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1057 [2020-10-12 12:14:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:14:05,525 INFO L225 Difference]: With dead ends: 9902 [2020-10-12 12:14:05,525 INFO L226 Difference]: Without dead ends: 7575 [2020-10-12 12:14:05,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-12 12:14:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7575 states. [2020-10-12 12:14:05,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7575 to 7471. [2020-10-12 12:14:05,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7471 states. [2020-10-12 12:14:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7471 states to 7471 states and 10903 transitions. [2020-10-12 12:14:05,775 INFO L78 Accepts]: Start accepts. Automaton has 7471 states and 10903 transitions. Word has length 1057 [2020-10-12 12:14:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:14:05,776 INFO L479 AbstractCegarLoop]: Abstraction has 7471 states and 10903 transitions. [2020-10-12 12:14:05,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:14:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 7471 states and 10903 transitions. [2020-10-12 12:14:05,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2020-10-12 12:14:05,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:14:05,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:14:05,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:14:05,807 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:14:05,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:14:05,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1127860949, now seen corresponding path program 1 times [2020-10-12 12:14:05,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:14:05,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820272803] [2020-10-12 12:14:05,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:14:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:06,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:11,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:11,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1118 [2020-10-12 12:14:11,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:14:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 12:14:11,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 12:14:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:14:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-12 12:14:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:13,073 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-12 12:14:13,219 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-12 12:14:13,374 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-12 12:14:13,537 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-12 12:14:13,684 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-12 12:14:13,997 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-10-12 12:14:14,185 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-12 12:14:14,346 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-10-12 12:14:14,675 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:14:14,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:14:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:14,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:14,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:14:14,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:14,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 12:14:14,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:14:14,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:14,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:14:14,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:14:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:15,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:15,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:14:15,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-12 12:14:15,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 12:14:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:14:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:15,648 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-12 12:14:16,067 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2020-10-12 12:14:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:14:24,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820272803] [2020-10-12 12:14:24,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:14:24,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 12:14:24,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834346934] [2020-10-12 12:14:24,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:14:24,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:14:24,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:14:24,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:14:24,356 INFO L87 Difference]: Start difference. First operand 7471 states and 10903 transitions. Second operand 18 states. [2020-10-12 12:14:24,605 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 12:14:26,826 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 72 [2020-10-12 12:14:27,112 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-12 12:14:27,461 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 76 [2020-10-12 12:14:28,217 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-12 12:14:28,923 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 176 [2020-10-12 12:14:30,587 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 175 [2020-10-12 12:14:33,782 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 174 [2020-10-12 12:14:39,029 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 78 [2020-10-12 12:14:43,767 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 172 [2020-10-12 12:14:44,568 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 186 [2020-10-12 12:14:46,025 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-12 12:14:56,274 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-12 12:14:57,771 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 192 DAG size of output: 176 [2020-10-12 12:15:23,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:15:23,993 INFO L93 Difference]: Finished difference Result 21421 states and 32591 transitions. [2020-10-12 12:15:23,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 12:15:23,994 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1100 [2020-10-12 12:15:23,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:15:24,060 INFO L225 Difference]: With dead ends: 21421 [2020-10-12 12:15:24,060 INFO L226 Difference]: Without dead ends: 14710 [2020-10-12 12:15:24,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=234, Invalid=822, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:15:24,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14710 states. [2020-10-12 12:15:24,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14710 to 14605. [2020-10-12 12:15:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14605 states. [2020-10-12 12:15:24,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14605 states to 14605 states and 21521 transitions. [2020-10-12 12:15:24,466 INFO L78 Accepts]: Start accepts. Automaton has 14605 states and 21521 transitions. Word has length 1100 [2020-10-12 12:15:24,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:15:24,467 INFO L479 AbstractCegarLoop]: Abstraction has 14605 states and 21521 transitions. [2020-10-12 12:15:24,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:15:24,467 INFO L276 IsEmpty]: Start isEmpty. Operand 14605 states and 21521 transitions. [2020-10-12 12:15:24,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2020-10-12 12:15:24,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:15:24,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:15:24,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:15:24,521 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:15:24,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:15:24,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1010514494, now seen corresponding path program 1 times [2020-10-12 12:15:24,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:15:24,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10567742] [2020-10-12 12:15:24,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:15:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:25,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking...